Abstract: Most of the previous simulations of high arch dam construction have adopted a discrete event simulation (DES) modeling method, but it is difficult to describe the individual behaviors in the complex construction system from the micro level, and its simulation model lacks quantitative analysis of the complex relationship between key continuous factors. A SD-ABMS hybrid simulation modeling method of high arch dam construction is proposed. First, the ABMS method is used to abstract, from the real construction process, four agents and a concrete delivery process－including mixing floor, dump trucks, cable machines, and construction bin surface; the behavior of each agent and their interaction are modeled. Then, various continuous factors that affect construction efficiency are modeled based on the SD method; their influences－such as those of fatigue and proficiency on construction efficiency－are analyzed quantitatively. Finally, based on SD-ABMS, a hybrid simulation model is constructed and equipped with the interface variables of working time and cable machine cycle time. Engineering application shows that compared with the traditional DES model or the single ABMS model, this hybrid model reduces the average simulation deviation from the real case by 4.8% and 3.5% respectively, demonstrating a new idea for refined simulations of arch dam construction.

Key words: high arch dam, construction simulation, hybrid simulation modeling, ABMS, SD